NWS Bismarck NDSV.W 0338September 6, 2026
Severe Thunderstorm Warning: McLean and Mercer, ND
The National Weather Service office in Bismarck issued a severe thunderstorm warning for McLean and Mercer in North Dakota, which was in force until 12:15 p.m. local time on September 6. It was the 338th severe thunderstorm warning the NWS office in Bismarck issued in 2026. North Dakota had 40 severe thunderstorm warnings in September 2026, against 20 in an average September of 2008-2025 (North Dakota's severe thunderstorm warnings by year).
ExpiredWarning
In force for 1.1 hours; it has expired. The agency may have replaced it with a new notice.
The notice
- Issued by
- National Weather Service, Bismarck ND
- Area
- McLean and Mercer
- State
- North Dakota
- Level
- Warning
- Issued
- 11:11 a.m. CDT, September 6, 2026
- Expires
- 12:15 p.m. CDT, September 6, 2026
- CAP severity, certainty, urgency
- Severe, Observed, Immediate
- VTEC event
- KBIS SV.W 0338
- Official source
- National Weather Service: the notice at its source
Source: National Weather Service: the notice at its source. AreaZine rebuilds this page from the agency's record; the agency's page is the one to act on. A U.S. Government work, in the public domain.
The notice as issued
SVRBIS The National Weather Service in Bismarck has issued a * Severe Thunderstorm Warning for... Northeastern McLean County in south central North Dakota... Northeastern Mercer County in south central North Dakota... * Until 1215 PM CDT. * At 1111 AM CDT, a severe thunderstorm was located near Hazen Bay Recreation Area, or 15 miles northeast of Beulah, moving northeast at 25 mph. HAZARD...60 mph wind gusts and half dollar size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. * Locations impacted include... Garrison, Max, Riverdale, Pick City, Coleharbor, Hazen Bay Recreation Area, Beulah Bay Recreation Area, Fort Stevenson State Park and Lake Sakakawea State Park.
What the agency told people to do
Seek shelter inside a well-built structure and stay away from windows. This storm is capable of producing damaging winds and large hail. Torrential rainfall is also occurring with this storm and may lead to flash flooding. Do not drive your vehicle through flooded roadways. If on or near Lake Sakakawea, get away from the water and move indoors or inside a vehicle. Remember, lightning can strike out to 15 miles from the parent thunderstorm. If you can hear thunder, you are close enough to be struck by lightning. Move to safe shelter now! Do not be caught on the water in a thunderstorm.
Source: National Weather Service: the notice at its source. The text is the agency's, unedited. A U.S. Government work, in the public domain.